fix

@@ -79,6 +79,9 @@ public class DegradeServiceImpl implements DegradeService {
         Set<String> level1PageSet = new HashSet<>();
         Set<String> level2PageSet = new HashSet<>();
         for (DegradeConfig degradeConfig : degradeConfigs) {
+            if (degradeConfig == null){
+                continue;
+            }
             if (StringUtils.isNotBlank(degradeConfig.getFunctionPointName())) {
                 functionSet.add(degradeConfig.getFunctionPointName());
             }